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copied!<p>the easiest way i've found to deal with this is to always <strong>check for the negative condition first with an if check</strong>. this also makes it easy to check multiple steps. </p> <p>always return something back from your model methods whenever possible. Like even in this example - we need to validate the form - i would use codeigniters form validation to validate that its an integer etc. if it passes validation then we need the $personId for the database search. So instead of just returning true/false from the validation - if validation passes then return the $personId : </p> <pre><code>function getperson() { // Validate the form // AND if its valid, return the validated $personId // Note the separate private method if the validation failed if ( ! $personId = $this->person->_validateGetPersonForm() ) { $this->error_msg = 'Error in validating the form. Please use a number.'; $this->_showGetPersonFailed() ; } elseif ( ! $person = $this->person->getBy($personId) ) { $this->error_msg = 'There is no person in our records with the number:'. $personId; $this->_showGetPersonFailed() ; } else { $this->_showResultsFor($person) ; } } </code></pre> <p>$this->error_msg is automatically available for any of your views and because we have broken out validation and the database search - the error message is easily appropriate for the exact condition. if the search failed then there is a private method _showGetPersonFailed() to show the form again. the last if / else is usually success - there is a separate private method to handle showing the results with the appropriate views. </p> <p>also suggest not using the word "model" in the file name like "person_model". it just clutters up the overall naming and forces you to type the word model over and over again :-) think of it this way: if you are calling something from a controller and getting back results - its almost always going to be a model. and all your model files will always be in a folder named models. </p>

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